I'm having some issues with automation in REAPER. If I draw in some automation and then press play, there are envelope points added all over the place (I'm in normal automation mode, trim/read, so this is unexpected behavior)

I can't reproduce this on Win7 64-bits with both Reaper 32-bits and 64-bits. Could you please give some steps to reproduce the problem? This is what I did:

1) Inserted new track2) Inserted a nebula instance3) Chose a program (in this case I used MWeQ's High-Shelf)4) Clicked on the 'env' button and showed the "Freq" parameter in a lane5) Drew some points6) Played it

Hmm, I've made an animated gif. I'm running one instance of nebula reverb (3 pro, latest build) All I changed in nebula was rate to 4000. Here I'm using Alex B clc pannner and automating the panner. I am converting samplerate from 96 to 44.1, which is working fine since I put cnv rate to 4000

I've tried several combination of options/preferences and I can't reproduce it yet. I noticed something interesting in your .gif, it only happens when you hover your mouse over the lane and it shows the tooltips, could you please disable all tooltips options in Preferences/Appearance and try again with that demo project?